Since PSP lists image files in order of modification time, most book creators (including my previous version) had a problem of having files randomly distributed with no regard for page number.
In this new version I added an option to transfer your newly created ebook to PSP and then update timestamps in the order of filenames. Not a big deal but it is a bit pain in the rear to do with with extra tools. Plus, interface looks a bit better (although i did not do usability study :P so you be the judges). Also, now you it will actually try to predict the size of the output book (which is mostly accurate).
Here is a screenshot:
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The program is available here.
P.S. Due to the bug in Visual Studio, transparency of the form does not work if you have your monitor set to more than 16bit color and you would enjoy nice lime color shape around the form.